Positive hpt then negative

[Bani25]

I am 45 with irregular periods.lmp was 22.3.18,on the 53rd day of missed period(10.5.18)tested positive on hpt with several brands.blood HCG was 0.5 on 15th may.hpt was positive again on the 18th.on 25th may hpt was negative.kept getting negative results till the 30th.there's no pain no bleeding.went for usg on 30th but no sac and no sign of ectopic pregnancy.i'm confused,tensed.I don't know what to do

[specialmom]

Well, that is confusing.  Prepare yourself as you do not sound pregnant any longer to me.  I'm sorry!  :-((  By the way, if you took a pregnancy test now, today, would you still get a positive?  

[Bani25]

Even I'm confused.will repeat the test tomorrow morning and you're right I have to be prepared.at the end of the day I have to be realistic.thank you for your response

[specialmom]

Did you read the tests correctly?  They have to be read within a short time from taking them as otherwise, an evaporation line appears which is mistaken for a positive.  Did they do a blood HCG on you?  That's the true way to know.  If the number is zero, you never were pregnant.  If the number is low, you had a chemical pregnancy.  If it is high, you are still pregnant.  Okay, I see you did get a blood HCG.  That number is so very low.  There would be no possible way for pregnancy.  I'm really sorry.  You may have had a chemical that never took off.  What does your ob/gyn say?  Are they going to do a D&C to be sure?  

[Bani25]

Yes read all tests(5 in total)within 5 minutes with morning urine sample.tested twice in the evening and both were positive.if it was a chemical pregnancy there would have been bleeding but no spotting nor bleeding.i have an appointment with my obs day after.lately I've been feeling hot and cold several times during the day and lightheaded too.i lead a very healthy and active lifestyle.a transvaginal USG might be helpful since nothing was visible on abdominal USG.all I can do is wait for my doctor's appointment.all this is killing me!!