2 days late

Soo I’m under investigation for under active thyroid at the moment and my period should of came 2 days ago still nothing. My thyroid never affects when my period comes though...I’ve had a sore back the last few days boobs have been a little more sore and there has been no signs of AF. Usually I get bad pains days before hand and nothing..I’ve done a test each day and it says negative. I know I’m eager 😩😩 but even if I’m late (which is hardly ever) I always still have AF symptoms. Could I still be pregnant????