Am I pregnant with twins???

I got my first positive on 9 DPO! Took three first response and two clear blue digitals and all positive! I'm now 14 DPO and took another first response and this time the test line was even darker then control line! AF was suppose to come tomorrow but I'm wondering if it's twins since I tested positive so early!? Symptoms so far have been tender boobs and mild af like cramping on and off.