20 Days Late

Hello! I am new to glow but I need some help!! I am currently 20 days late (50 day cycle) so far, my last period was on Feb.20 and my boyfriend and I had unprotected sex the day before. This is the first time we have tried to conceive. I have been experiencing mild nausea, slightly lightheaded, mild headaches, I a bloated, have to pee a lot, and have a bit of sore nipples. Everything has been very mild so I am not quite sure if this is the way I am supposed to feel. My pants are also feeling very tight and I have not gained weight. When I touch my stomach it feels weird like a little ball when I apply pressure. If I am i would be about 9 weeks. I forgot to mention that in March 8-11 I had very light pink/light brown spotting. Perhaps I should take a pregnancy test but I want to read other stories since I don't have sisters and I haven't told anyone.. Blessings!