To be concerned about a bruise on my son?

[Someonehelpmi]

I have no idea what to do about this or even if I should post here but I really need an outsiders views!

My son is under 3 months and obviously non mobile. I collected him from his dad's house after an overnight stay and as I was changing I noticed a blue/pink dotty bruise on the inside of his neck, I mentioned it and he got very upset that I was insinuating he had done something (fair enough anyone would be) so I just put it down to the car seatbelt running him. HOWEVER once km the car I noticed more little bruises and marks all across his chest and the top of one armpit. I am not questioning everything I know and everyone. Obviously it's horrifying that someone would think you had purposely harmed a small child but babies don't really bruise that easily or to that extent? I mean I've given him a firm pat on the back to wind him and never had that. Even if it's accidental it's worrying? His dad has now come back to me saying he did notice it...

Basically I need an opinion, should I take him to the doctors or leave it? He is otherwise well, drinking alot weeing and pooing. Even by thinking about hiding it i feel like that already makes me look like I have something to hide. However I'm sure it's pretty much guaranteed if I take an infant that small with non accidental injuries to the GP I'm guaranteed to be put on a list and have possible SS involvement. Am I overreacting?? I feel like a horrible parent that I'm even in this position. He didn't have a scratch on him when I left him with his dad but now I'm just questioning everything . I also don't want to insinuate that is father would purposefully harm him as he has always adored him and cared for him well. Help please

Just had a thought, can you find a ruler or measuring tape of some sort and then take some more photos including the measuring tape or ruler, even though they are fading, just to record the correct size of the bruises

Yeah. Because every time a kid has a bruise somebody must be abusing them.

I can’t believe someone wrote this. How on earth does a non mobile baby get a bruise? It indicates a problem, either abuse or a medical issue that needs investigating. Can you not see that? This isn’t a toddler learning to walk, unsteady on their feet or an active, but clumsy child at school. This is a baby who depends on his parents for protection.

It was World Haemophillia Day yesterday, if you go on the Haemophillia Societies Facebook page you can see a video of a baby who suffered bruising before diagnosis. As people have said there could be many reasons and not all need to be scary, for example some bleeding disorders are very mild but still cause bruising. Either way I am pleased the GP was sensible and he is still with you! Hope all goes well.

Any update op?