sorry, I just found your question. The site gets thousands of visitors a day and so some posts just get lost in amongst it all. We do try and answer what we can.
First thing is have you taken a pregnancy test? That's always the first thing you would need to do if you suspect you're pregnant. What you had in January sounds like a normal period to me. It's normal for a period to start out as spotting and then get into a heavier flow and last around 5 days.
I take it you've not had one this month, though? If it's been at least 2 weeks since intercourse then you can take a home pregnancy test with first morning urine.
We can't tell yo if you're pregnant or not - only a test can.
U have to do what everyone of us pregnant women did.... because we have no way of telling if your are or are not pregnant..... you need to wait till your period is late (for best results).... get a pregnancy test..... use the first pee of the day.... if test is negative but there is still no period wait 3 days and test again.... early pregnancy symptoms are the EXACT same as period symptoms!!! So those can never be used!!!! Some times our period changes... colors.. length... frequency.. dates... its all a part of body changes.... even if u have never had of like that before doesn't mean it isn't happening to u...