Lump in leg

[Silvermockingbird]

Hello! So today I was cuddling with DD (21 months) and noticed at the top of her thigh a very hard lump under the skin, about size of a 50p, feels more like a patch can’t really feel the outside.. doesn’t stick out, doesn’t seem sore at all, when she stands up there’s a slight indent in her leg where it is. Really worried about it but then remembered she had a meningitis injection a month ago, can’t even remember If it was same thigh but has anyone else experienced a hard lump after vaccinations/injections that lasted a while? Only thing I can think of

DD2 had this after her 3rd injections but hers were really sore. I had called 111 to asked what else I could give as she had a really high temp after 4 does of calpol and their initial question was is there a hard lump. I said no because she didn't (they had said keep an eye that she doesn't get one ) then the next morning she had a large hard lump so called back and the doctor just said watch it but it's probably just the injury site so I'm still confessed as in to why they ask. But if your worried that's what 111 is for or the gp tomorrow