short period or implantation bleeding??

hey ladies! I need some serious advice...my period started on Saturday(14dpo) and pretty much ended yesterday on Sunday. has anyone experienced a 2 day period? my husband and I have been trying to conceive for 6 months now with no luck. forgot to mention that it came 3 days early....i was supposed to start tomorrow, Tuesday. also, the two days I was bleeding there was not clots like usual (tmi) in other words it wasn't really heavy. my periods are usually 4-5days max. So I've never had one this short. I thought for a second maybe it was implantation bledding? as I've read some women experience normal bleeding early during pregnancy but I took an internet cheapie test Last night and it was negative. 😕has anyone experienced this ? I could honestly use some advice ! Thank you!