Worried I'm losing my baby

I had light consistent cramping on my left side since yesterday. I noticed my basal temp dropped this morning and took a cheap Wondfo test this morning and although I got a line, I thought it was pretty light for 16 DPO. I checked my CM mid day and came out with blood. Now I'm bleeding only when I wipe, but it's not coming down on my liner but it seems like a lot. I'm five weeks tomorrow so my doctor only had me get blood work and not an ultrasound. I have to wait until tomorrow for the results and test again in 48 hours to make sure the levels are rising. Has anyone had anything similar to this? This is my second pregnancy and I had no bleeding with my first so I'm at a loss here. Any thoughts would be appreciated. Thank you.