Ignore the IgM. It's supposed to detect new infections, so you'd be way beyond that date right now. It's also notoriously unreliable. Act like you didn't have that done.
Cultures also miss a lot of infections. You have to get a good sample, get it when the blisters are fresh, so to speak, and it's not always easy to do that.
What did your blood test say, exactly? You need to get the results so we can help you figure it out. It should say something along the lines of IgG hsv1 with a number, and hsv2 with a number, or it may say hsv1&2 with one number. You really need a type specific one that gives separate values for each type. If it's a combo test, with one number for hsv1&2, you don't know which type you have, or if you have both. This is important.
I'm guessing you had genital symptoms? If you only have genital herpes, of either type, you are not infectious from your mouth. This will be definite if your test result is positive for type 2 only. If you had genital symptoms, you may have type 1 genitally or type 2 genitally, which is why it's important to know which type. If you have had genital symptoms, talk to your doctor about suppressive therapy. I don't know what trimester you're in, and that's important. You can deliver vaginally as long as you don't have an outbreak. You can read more about pregnancy and herpes in the Herpes Handbook - https://westoverheights.com/wp-content/uploads/2014/08/Updated-Herpes-Book.pdf It's free and written by Terri Warren, who is one of the world's leading experts on herpes.
If you didn't have genital symptoms, but test positive for type 1, you can assume it's an oral infection. You would still be able to kiss your baby, but if you feel any symptoms of anything on your mouth, don't kiss your baby.
Many, many women have herpes and have babies. Just make sure you are informed about the type you have and the location, and everything will be fine. Let us know about your test (there is info about testing in the handbook I linked), and we can help with that. :)
So that's all IgM testing. I don't see anything about IgG? As I already explained, you need an IgG test. The IgM shouldn't be done on adults, and yours isn't type specific, so it means nothing.
Ask for a type specific IgG blood test. It will give you separate results for type 1 and type 2. It won't say and/or.