A little nervous....and a little excited maybe??

Ok, so hubby and I have sex very occasionally at this point. We're talking like once a month, if that. We have two kiddos (4 and 2). Well, this month we happened to have sex the day after Glow said I was ovulating. We've been on the fence about having another baby, so we would be just fine either way. Normally we use condoms, but this time we chose not to and just leave it up to fate.

Anywayyy...according to Glow I was supposed to start my period yesterday. I had some very minor spotting (talking a slight pink tinge when wiping) yesterday, but no AF yet. I took a test a few days ago that was negative (I think around 10 DPO). I haven't really had any symptoms of pregnancy OR AF (no cramping, no headaches, no nausea, etc). I have had a little difficulty getting in a deep breath which I had when I was pregnant with my other two, but more in late pregnancy when I was ready to pop.

I know I will need to test to know for sure, but any thoughts? With my previous pregnancies, it took us months and months of trying, BDing almost every day, to conceive. Could it really be possible that after ONE time this month, we are actually prego???