TTC baby # 2

TTC baby # 2. Have 25 to 28 day cycle decided to take test on day 26 it came out faint positive. Then on day 28 started bleeding. I have usually a 5 day period. Had 2 day normal period third day was light old blood and today just very light old blood. I don't know if this is my period or I could be pregant. Looks like old blood has stopped. Woke up this morning light headed, feeling very hot and nauseated.
Just took bottom test now swear I see two lines