Im so confused 😩

So me and SO have been TTC for 6 months. This cycle I supposedly ovulated on the 4th and we DTD on the 5th and 6th. Around 7-9DPO I was having cramps but not as bad as period cramps, my bbs were extremely sore and tingly, I was hella nauseous, and still am today. Me being the impatient person I am took a pregnancy test on the 17th and seemed to have a very very faint line. I started my period the next day (heavy bleeding and all) but this is where it confuses me. I normally bleed for 5-6 days but stopped bleeding last night (the 20th) this is definitely not normal at all for me! Someone please tell me what the world is going on!!